Chocolate is one of the world’s most popular and beloved foods. Made from the beans of the cacao tree, chocolate has been consumed for thousands of years for its rich flavour, texture, and aroma. While chocolate is often considered a guilty pleasure or indulgence, it also has a range of potential health benefits, particularly when consumed in moderation and in its dark, minimally processed form. In this blog post, we will explore some of the scientific evidence for the health benefits of eating chocolate and the mechanisms behind them.
What is Chocolate?
Chocolate is a food made from the seeds of the cacao tree, which grows in tropical regions of the world, such as South America, Africa, and Asia. The seeds, also called cocoa beans, are harvested, fermented, roasted, and then ground into a paste, which is called chocolate liquor. This paste can be further processed into cocoa powder and cocoa butter, which are used to make various types of chocolate products, such as milk chocolate, dark chocolate, white chocolate, and chocolate bars, truffles, cakes, cookies, and other desserts.
The main components of chocolate are cocoa solids, cocoa butter, sugar, and sometimes milk and other flavourings. The quality and quantity of these components vary depending on the type of chocolate and the brand. Dark chocolate typically contains at least 70% cocoa solids, while milk chocolate has lower amounts, and white chocolate has no cocoa solids at all.
Health Benefits of Eating Chocolate
Chocolate contains various bioactive compounds that may contribute to its health benefits, such as flavonoids, theobromine, phenylethylamine, and anandamide. These compounds have been studied for their potential effects on the cardiovascular system, the brain, the immune system, and other organs and functions of the body.
Here are some of the health benefits of eating chocolate that have been supported by scientific research.
Improves Heart Health
Dark chocolate, in particular, has been shown to have a positive effect on heart health by improving blood flow, reducing inflammation, and lowering blood pressure. Flavonoids, a type of antioxidant found in cocoa, have been shown to increase the production of nitric oxide, a molecule that relaxes and dilates blood vessels, thereby improving blood flow and reducing the risk of atherosclerosis, a buildup of plaque in the arteries. A meta-analysis of 42 studies found that daily consumption of dark chocolate (at least 50 grams or 1.8 ounces) for two to eight weeks significantly reduced systolic and diastolic blood pressure by an average of 2.9 and 1.9 mm Hg, respectively, compared to a control group.
Boosts Brain Function
Chocolate may also enhance cognitive function and mood by increasing blood flow and oxygenation to the brain and stimulating the release of neurotransmitters, such as serotonin and dopamine, that regulate mood, appetite, and pleasure. A study of healthy young adults found that consuming dark chocolate (48 g) with a high flavanol content (900 mg) improved performance on cognitive tests of attention and working memory, compared to a low-flavanol group (10 mg). Another study found that eating chocolate with a higher theobromine content (250 mg) improved alertness and cognitive performance on a vigilance task, compared to a low-theobromine group (10 mg).
Reduces Inflammation
Inflammation is a natural response of the immune system to injury or infection, but chronic inflammation can contribute to many chronic diseases, such as arthritis, diabetes, cancer, and Alzheimer’s disease. Chocolate has been shown to have anti-inflammatory effects, possibly due to its flavonoid content. A study of women with type 2 diabetes found that daily consumption of dark chocolate (30 g) for eight weeks significantly reduced markers of inflammation, such as interleukin-6 and C-reactive protein, compared to a control group. Another study found that consuming dark chocolate (40 g) for 15 days decreased the level of oxidative stress and inflammation in overweight and obese adults.
Protects Skin from Sun Damage
UV radiation from the sun can cause skin damage, such as sunburn, premature ageing, and skin cancer. However, chocolate may help protect the skin from such damage by boosting its resistance to UV rays and improving its hydration and blood flow. A study of women showed that consuming high-flavanol cocoa (326 mg) for 12 weeks increased the minimal erythema dose (MED), which is the amount of UV radiation needed to produce a slight reddening of the skin, by 15% and improved skin microcirculation. Another study found that eating dark chocolate (20 g) with a high flavanol content (329 mg) for 12 weeks reduced skin roughness and improved skin hydration and elasticity.
Supports Weight Management
Although chocolate is often associated with weight gain and obesity, some studies suggest that it may actually help with weight management when consumed in moderation and combined with a healthy diet and lifestyle. One possible mechanism is that chocolate can reduce cravings and appetite by promoting the release of satiety hormones, such as peptide YY and leptin. A study of women found that consuming dark chocolate (100 g) as a snack or after a meal reduced subsequent energy intake and hunger compared to a white chocolate group. Another study found that consuming dark chocolate (20 g) before a meal decreased food intake and appetite in normal-weight and overweight adults.
Elevates Mood and Relieves Stress
Chocolate has long been associated with pleasure and mood enhancement, and some studies suggest that it may have a beneficial effect on mood and stress levels. The flavonoids and other compounds in chocolate may modulate the activity of the hypothalamic-pituitary-adrenal (HPA) axis, which regulates the body’s response to stress, and increase the synthesis and release of endorphins and other mood-boosting neurotransmitters. A study of healthy men found that consuming dark chocolate (40 g) for two weeks reduced urinary cortisol and catecholamines, which are markers of stress, and improved self-reported mood and anxiety compared to a control group. Another study found that eating chocolate (40 g) for 30 days improved feelings of well-being and decreased perceived stress and fatigue in adults with high anxiety.
Conclusion
While it’s important to keep in mind that chocolate is still a calorie-dense food that should be consumed in moderation, the scientific evidence suggests that chocolate, particularly dark chocolate, may have several potential health benefits, such as improving heart health, boosting brain function, reducing inflammation, protecting the skin from sun damage, supporting weight management, and elevating mood and relieving stress. However, it’s also important to choose high-quality, minimally processed chocolate with a high cocoa content and low sugar and fat content to maximize the health benefits and minimize the risks. So go ahead and indulge in some delicious chocolate, but remember to savour it mindfully and in moderation.
